From e61b559eb2305dd3627954640d73540a58f90f93 Mon Sep 17 00:00:00 2001
From: arai <souweb22@gmail.com>
Date: Sun, 23 Feb 2020 21:38:14 +0900
Subject: [PATCH 1/2] delete 'return' in Filesystem.php

---
 src/Composer/Util/Filesystem.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Composer/Util/Filesystem.php b/src/Composer/Util/Filesystem.php
index 7cdad1df4..e305b03b5 100644
--- a/src/Composer/Util/Filesystem.php
+++ b/src/Composer/Util/Filesystem.php
@@ -206,7 +206,7 @@ class Filesystem
                 usleep(350000);
                 $unlinked = @$this->unlinkImplementation($path);
             }
-            
+
             if (!$unlinked) {
                 $error = error_get_last();
                 $message = 'Could not delete '.$path.': ' . @$error['message'];
@@ -237,7 +237,7 @@ class Filesystem
                 usleep(350000);
                 $deleted = @rmdir($path);
             }
-            
+
             if (!$deleted) {
                 $error = error_get_last();
                 $message = 'Could not delete '.$path.': ' . @$error['message'];
@@ -340,7 +340,7 @@ class Filesystem
             }
         }
 
-        return $this->copyThenRemove($source, $target);
+        $this->copyThenRemove($source, $target);
     }
 
     /**

From c5ce4de89eb58c17e1a0ac331b904afc02da2dfb Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Fri, 28 Feb 2020 22:27:53 +0100
Subject: [PATCH 2/2] Consistently return void

---
 src/Composer/Util/Filesystem.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Util/Filesystem.php b/src/Composer/Util/Filesystem.php
index e305b03b5..008ed584a 100644
--- a/src/Composer/Util/Filesystem.php
+++ b/src/Composer/Util/Filesystem.php
@@ -310,7 +310,9 @@ class Filesystem
         }
 
         if (!function_exists('proc_open')) {
-            return $this->copyThenRemove($source, $target);
+            $this->copyThenRemove($source, $target);
+            
+            return;
         }
 
         if (Platform::isWindows()) {